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Recognizing Rigid Objects by Aligning Them with an Image
(1987-01-01)
This paper presents an approach to recognition where an object is first {\\it aligned} with an image using a small number of pairs of model and image features, and then the aligned model is compared directly against ...
A Direct Method for Locating the Focus of Expansion
(1987-01-01)
We address the problem of recovering the motion of a monocular observer relative to a rigid scene. We do not make any assumptions about the shapes of the surfaces in the scene, nor do we use estimates of the optical ...
Ambiguities of a Motion Field
(1987-01-01)
We study the conditions under which a perspective motion field can have multiple interpretations. Furthermore, we show that in most cases, the ambiguity in the interpretation of a motion field can be resolved by imposing ...
Offices are Open Systems
(1987-02-01)
This paper takes a prescriptive stance on how to establish the information-processing foundations for taking action and making decisions in office work from an open system perspective. We propose due process as a ...
Time-Frequency Representations for Speech Signals
(1987-05-01)
This work addresses two related questions. The first question is what joint time-frequency energy representations are most appropriate for auditory signals, in particular, for speech signals in sonorant regions. The ...
A Government-Binding Based Parser for Warlpiri, a Free-Word Order Language
(1987-01-01)
Free-word order languages have long posed significant problems for standard parsing algorithms. This thesis presents an implemented parser, based on Government-Binding (GB) theory, for a particular free-word order ...
Formal Multilevel Hierarchical Verification of Synchronous MOS Circuits
(1987-06-01)
I have designed and implemented a system for the multilevel verification of synchronous MOS VLSI circuits. The system, called Silica Pithecus, accepts the schematic of an MOS circuit and a specification of the circuit's ...
Natural Object Categorization
(1987-11-01)
This thesis addresses the problem of categorizing natural objects. To provide a criteria for categorization we propose that the purpose of a categorization is to support the inference of unobserved properties of objects ...
UNITRAN: A Principle-Based Approach to Machine Translation
(1987-12-01)
Machine translation has been a particularly difficult problem in the area of Natural Language Processing for over two decades. Early approaches to translation failed since interaction effects of complex phenomena in ...
An O(N) Algorithm for Three-Dimensional N-Body Simulations
(1987-10-01)
We develop an algorithm that computes the gravitational potentials and forces on N point-masses interacting in three-dimensional space. The algorithm, based on analytical techniques developed by Rokhlin and Greengard, ...